dom dataset getAttribute

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<ul>      <li data-src="srcvalue" id="myLi">123456</li>    </ul>    <script>      var myLi = document.getElementById('myLi');        //var newDom = document.createElement('p');      //  document.write(newDom.outerHTML);      // document.body.append(newDom);      //newDom.innerHTML = 'hello222';        // document.write(myLi.getAttribute('data-src'));      right  native getAttribute      // document.write($(myLi).attr('data-src'));     right , jquery  dom.attr      document.write(myLi.dataset);       right    </script>